# 12G Area of a trapezium + area of composite figures

Area of trapeziums and composite figures
Schedule:
• Learning goals
• Revision
• Area of a trapezium
• Area of composite figures
1 / 14
Slide 1: Tekstslide
WiskundeMiddelbare schoolvwoLeerjaar 2

In deze les zitten 14 slides, met interactieve quizzen en tekstslides.

Lesduur is: 60 min

## Onderdelen in deze les

Area of trapeziums and composite figures
Schedule:
• Learning goals
• Revision
• Area of a trapezium
• Area of composite figures

#### Slide 1 -Tekstslide

Learning goals
At the end of this lesson I can:
•  Calculate the area of any trapezium
• Calculate the area of a composite figure

A
A
B
B
C
C
D
D

A
A
B
B
C
C
D
D

#### Slide 4 -Quizvraag

What is a trapezium?

#### Slide 5 -Open vraag

Area of a trapezium
A quadrilateral with at least one pair of parallel lines
Area of a trapezium =
2(a+b)h

#### Slide 6 -Tekstslide

Area of a trapezium

Find the area

#### Slide 8 -Tekstslide

Find the area
A=2(3+7)4=
A=2(14+11)10=
A=2(12+20)7=
20 cm2
125 cm2
112 cm2
Area rectangle = 70·165 = 11550 m2
Area trapezium =                              21175 m2
Total Area = 11550 + 21175 = 32725 m2

Money earned in total = 7 · 32725 = 229 075 pounds
2(165+220)110=

#### Slide 9 -Tekstslide

What to do

- I really want a challenge                                                  Open the Pink slides on LessonUP

- I understand it, but I think a                                           Open the Blue slides on LessonUp
bit more practice will help me

- I think more practice will help me,                             Work with the board
and would like to do more board work

#### Slide 10 -Tekstslide

Area of composite figures
Basic shapes: square, rectangle, triangle, parallelogram, trapezium
Composite shape: A shape created with 2 or more basic shapes.

#### Slide 11 -Tekstslide

Extra practice + help
p. 262 : 12G             1abc, 2, 4
ManageBac > Files > Unit 5: Measurement > Area of compound shapes 1 (questions 2-6)

#### Slide 12 -Tekstslide

Extra practice
p. 262 : 12G             1abc, 3, 4
ManageBac > Files > Unit 5: Measurement > Area of compound shapes 1 (Questions 2-6)
ManageBac > Files > Unit 5: Measurement >

#### Slide 13 -Tekstslide

Challenge
p. 262 : 12G             3, 4
ManageBac > Files > Unit 5: Measurement > Area of compound shapes 2
ManageBac > Files > Unit 5: Measurement > Surface area 2